FELIX KARRER (1825-1903), Austrian geologist, was born in Venice on the 11th of March 1825. He was educated in Vienna, and served for a time in the war department, but he retired from the public service at the age of thirty-two, and devoted himself to science. He made especial studies of the Tertiary formations and fossils of the Vienna Basin, and investigated the geological relations of the thermal and other springs in that region. He became an authority on the foraminifera, on which subject he published numerous papers. He wrote also a little book entitled Der Boden der Hauptstadte Europas (1881). He died in Vienna on the 19th of April 1903.